In this post explains how to send email from your c# windows application with progress bar and attachment, this method uses the smtp feature of email clients.
Change the red color text to your credentials.
Create a New Windows Form Application
File -> New -> Project -> Windows Forms Application
Add 4 Textbox for To,Subject,Attachements,Message
Add 5 Labels
Add 2 Buttons for Send and Attachment Upload
Add 1 Progressbar
Add Namespace
using System.Net
using System.Net.Mail;
Code for Uploading Attachment in Upload Button Click
private void btUpload_Click(object sender, EventArgs e){OpenFileDialog dlg = new OpenFileDialog();if (dlg.ShowDialog() == DialogResult.OK){tbAttach.Text = dlg.FileName.ToString();}}Code for Sending Email in Send Button Click
private void btSend_Click(object sender, EventArgs e){if (tbTo.Text != "" && tbSub.Text != "" && tbBody.Text != ""){try{lblSucces.Text = "Sending ...";SmtpClient client = new SmtpClient("smtp.gmail.com");client.Port = 587;client.EnableSsl = true;
//progress BarprogressBar1.Visible = true;progressBar1.Minimum = 1;progressBar1.Maximum = 100000;progressBar1.Value = 1;progressBar1.Step = 1;for (int x = 1; x <= 100000; x++){progressBar1.PerformStep();}//progress Bar
client.Timeout = 100000;client.DeliveryMethod = SmtpDeliveryMethod.Network;client.UseDefaultCredentials = false;client.Credentials = new NetworkCredential("username@gmail.com", "passsword");MailMessage msg = new MailMessage();msg.To.Add(tbTo.Text);msg.From = new MailAddress("username@gmail.com");msg.Subject = tbSub.Text;msg.Body = tbBody.Text;if (tbAttach.Text != ""){Attachment data = new Attachment(tbAttach.Text);msg.Attachments.Add(data);client.Send(msg);lblSucces.Visible = true;MessageBox.Show("Successfully Sent Message.");progressBar1.Visible = false;lblSucces.Text = "Email Send Successfully";}else{client.Send(msg);lblSucces.Visible = true;MessageBox.Show("Successfully Sent Message.");progressBar1.Visible = false;lblSucces.Text = "Email Send Successfully";lblSucces.ForeColor = Color.Green;}}catch (Exception ex){MessageBox.Show(ex.Message);lblSucces.Text = "Email Sending Failed !";}}else{MessageBox.Show("All Fields are Mandatory !");}}
